Patent US6050953A successfully refreshed from Google Patents.
US6050953A
Expired / Lapsed
US
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Device and method for measuring a spirogram
Assignee: February 27 2012 Marion C Warwick As Trustee Of Henrietta H Warwick Trust U/a/d
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Filing: 1998-05-21
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Granted: 2000-04-18
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Expires: 2018-05-21
Abstract
Abstract A device and method for measuring critical portions of an individual's forced expiratory efforts. The device includes a series of preset negative pressure sensors attached to a sensor port located in a breathing tube of predetermined dimension. A patient blows through the breathing tube triggering the various sensors depending on the airflow rate. The time each of the sensors are activated is recorded. The recorded information can be used to determine various diagnostic parameters.
Inventors
- 👤 Warren J. Warwick
- 👤 Leland G. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:43
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/087; A61B5/0871
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
A device for measuring pulmonary function, comprising: an elongate breathing tube having an inside diameter of less than about 15 mm; a first sensor in fluid communication with the flow tube: wherein the first sensor is activated at a first pressure level and remains activated so long as the pressure exceeds the first pressure level; a second sensor in fluid communication with the flow tube; wherein the second sensor is activated at a second pressure level and remains activated so long as the pressure exceeds the second pressure level; and timing means for determining the time that each sensor is activated when a person blows into the tube.
Claim 2
Independent Claim
108 words
A device for measuring pulmonary function, comprising: an elongate breathing tube having an inside diameter of less than about 15 mm; a first sensor in fluid communication with the flow tube: wherein the first sensor is activated at a first pressure level and remains activated so long as the pressure exceeds the first pressure level; a second sensor in fluid communication with the flow tube; wherein the second sensor is activated at a second pressure level and remains activated so long as the pressure exceeds the second pressure level; and timing means for determining the time that each sensor is activated when a person blows into the tube.
Claim 3
Dependent Claim
19 words
The device in accordance with claim 1, wherein the first sensor activates at between about 0.125 to 0.373 kPa.
Claim 4
Dependent Claim
20 words
The device in accordance with claim 1, wherein the first sensor and the second sensor each comprise a pressure transducer.
Claim 5
Dependent Claim
18 words
The device in accordance with claim 1, wherein the inside diameter of the tube is approximately 9.5 mm.
Claim 6
Dependent Claim
21 words
The device in accordance with claim 1, wherein the inside diameter of the tube is between about 2 and 15 mm.
Claim 7
Independent Claim
88 words
A method of measuring pulmonary function, comprising the steps of: providing a pulmonary function device including a blow tube fluidly connected to a plurality of pressure sensitive sensor wherein at least two of the sensors are activated at different pressure levels; measuring the time that each pressure sensor is activated while a person blows into the blow tube; and comparing the time that the sensors are activated while the person is blowing into the blow tube with a reference set of time data for a group of subjects.
Claim 8
Independent Claim
88 words
A method of measuring pulmonary function, comprising the steps of: providing a pulmonary function device including a blow tube fluidly connected to a plurality of pressure sensitive sensor wherein at least two of the sensors are activated at different pressure levels; measuring the time that each pressure sensor is activated while a person blows into the blow tube; and comparing the time that the sensors are activated while the person is blowing into the blow tube with a reference set of time data for a group of subjects.
Claim 9
Dependent Claim
16 words
The method in accordance with claim 6, wherein the group of subjects is a control group.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-18 | 2003-10-18 | 2004-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-18 | 2007-10-18 | 2008-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-18 | 2011-10-18 | 2012-04-18 | $7700.00 | Window Closed / Lapsed |